import 'package:flutter/foundation.dart';
import 'package:geolocator/geolocator.dart';


class GpsUtil{


  /// Determine the current position of the device.
  ///
  /// When the location services are not enabled or permissions
  /// are denied the `Future` will return an error.
  static Future<Position> determinePosition() async {
    bool serviceEnabled;
    LocationPermission permission;

    // Test if location services are enabled.
    serviceEnabled = await Geolocator.isLocationServiceEnabled();
    if (!serviceEnabled) {
      // Location services are not enabled don't continue
      // accessing the position and request users of the
      // App to enable the location services.
      return Future.error('Location services are disabled.');
    }

    permission = await Geolocator.checkPermission();
    if (permission == LocationPermission.denied) {
      permission = await Geolocator.requestPermission();
      if (permission == LocationPermission.denied) {
        // Permissions are denied, next time you could try
        // requesting permissions again (this is also where
        // Android's shouldShowRequestPermissionRationale
        // returned true. According to Android guidelines
        // your App should show an explanatory UI now.
        return Future.error('Location permissions are denied');
      }
    }

    if (permission == LocationPermission.deniedForever) {
      // Permissions are denied forever, handle appropriately.
      return Future.error(
          'Location permissions are permanently denied, we cannot request permissions.');
    }

    // final LocationSettings locationSettings = LocationSettings(
    //   accuracy: LocationAccuracy.high,
    //   distanceFilter: 100,
    // );
    // When we reach here, permissions are granted and we can
    // continue accessing the position of the device.


    late LocationSettings locationSettings;

    if (defaultTargetPlatform == TargetPlatform.android) {
      locationSettings = androidSettings();
    } else if (defaultTargetPlatform == TargetPlatform.iOS || defaultTargetPlatform == TargetPlatform.macOS) {
      locationSettings = appleSettings();
    } else if (kIsWeb) {
      locationSettings = webSettings();
    } else {
      locationSettings = defaultSettings();
    }



    return await Geolocator.getCurrentPosition(locationSettings: locationSettings);
  }

  static LocationSettings defaultSettings() {
    return const LocationSettings(
      accuracy: LocationAccuracy.high,
      distanceFilter: 100,
    );
  }

  static WebSettings webSettings() {
    return WebSettings(
      accuracy: LocationAccuracy.high,
      distanceFilter: 100,
      maximumAge: const Duration(minutes: 5),
    );
  }

  static AppleSettings appleSettings() {
    return AppleSettings(
      accuracy: LocationAccuracy.high,
      activityType: ActivityType.fitness,
      distanceFilter: 100,
      pauseLocationUpdatesAutomatically: true,
      // Only set to true if our app will be started up in the background.
      showBackgroundLocationIndicator: false,
    );
  }

  static AndroidSettings androidSettings() {
    return AndroidSettings(
        accuracy: LocationAccuracy.high,
        distanceFilter: 100,
        forceLocationManager: true,
        intervalDuration: const Duration(seconds: 10),
        //(Optional) Set foreground notification config to keep the app alive
        //when going to the background
        foregroundNotificationConfig: const ForegroundNotificationConfig(
          notificationText:
          "Example app will continue to receive your location even when you aren't using it",
          notificationTitle: "Running in Background",
          enableWakeLock: true,
        )
    );
  }
}

